Transcript
PDA-300 PoE Powered Device Analyzer IEEE 802.3at Power over Ethernet
Product Overview
NEW! 802.3at PD Class Compliance Analysis
Key Features
Automated Testing of IEEE 802.3at PD Parameters
One-Button 802.3at Test Sequence & Report
PD Load Monitoring and Class Compliance Analysis
PD Load Monitoring over Voltage
Informative Pop-Up Spreadsheet Reports & Statistics
Continuous PD Source Power to 25.5 Watts
Compliant 2-Event High Power Grants
Thru Port for External PD Control, Packet Test, & LLDP Test
PD Energy Consumption Measurements
Optional User-Defined Tests and Limits
Use Stand-Alone or with Windows PC A
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PDA 100 t PDA 300 U
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PDA-300 Powered Device Analyzer
Overview Type-1 (<13W) PD’s Type-2 (<25.5W) PD’s
The PDA-300 Powered Device Analyzer is a single-box comprehensive solution for testing IEEE 802.3at PoE Powered Devices (PD’s). It offers one-button, fully automated test sequences and limit processing for critical Powered Device operating parameters. With measurements performed at the Powered Device network interface, many parameters critical to IEEE 802.3at interoperation can be efficiently compared to specification requirements thus fully avoiding the need for extensive interoperability testing with IEEE 802.3at PSE’s and network connections.
Automated Conformance Testing
Superior Defect Coverage The PDA-300 provides defect coverage well in excess of what a commercial PSE or instrument grade DC power supply might offer. It will automatically perform measurements across each powered pair and polarity combination. Measurements such as DC load-over-voltage, classification validity, power on-off thresholds, MPS validity, and detection impedance are readily performed and compared to applicable test limits with no special fixtures or device programming requirements. The PDA-300 can continuously source up at least 25.5 watts to a PD.
Powerful Load Monitor PD Classification & LLDP Request Validation
Simultaneous PD Control and Flexible Automated Testing of 802.3at PD’s The PDA-300 includes a built in, fully automated test sequence that Test measures up to twenty 802.3at specification parameters on any unmanaged PD. Testing can be initiated from the instrument front panel or from host PC software where test results are automatically captured to informative Microsoft Excel spreadsheet reports that check test limits and provide multi-unit statistics.
Evaluation & Design Quality Assurance Manufacturing Field Service Energy Rating
Tests may be pre-configured for single quadrant (ALT A, MDI) testing or multi-quadrant (ALT A&B, MDI & MDI-X) testing. Test limits can be adjusted in the PDA-300 instrument and/or in the specialized spreadsheet report template. IEEE 802.3at Type-1 and Type-2 PD’s are always subjected to both Type-1 and Type-2 power grants during automated testing to assure interoperability across all PSE types. Powerful Real-Time Load Monitor and Compliance Analysis Under PDA Interactive software, the PDA-300 offers powerful real time tools for analysis of average, peak, and maximum classification compliant load levels. Analyses can be performed across a range of input voltages and may be done coincidently with PD control and configuration activity. Class and Peak Power violations are automatically recognized and computed according to requirements introduced in the IEEE 802.3at specification.
Replaces PSE’s, DC Supplies, Fully Integrated, One-Box Solution Fixtures, Scopes, & Meters Just Plug and Test
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The PDA-300 removes the need for specialized instrumentation setups that might include DC power supplies, precision meters, specialized test fixtures, and custom software. The PDA-300 may be used stand-alone to rapidly qualify PD’s or may be used with PDA Interactive software to develop detailed specification compliance analyses of new PD designs. It may also be remotely controlled by ATE software using an API library. This versatility allows users to apply the PDA-300 over the full lifecycle of any Powered Device including newer, Type-2, IEEE 802.3at compliant PD’s.
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PDA-300 Powered Device Analyzer
PDA-300 versus a Commercial PSE With the ready availability of commercial Power Sourcing Ethernet Switches (PSE), including low cost PSE’s, a strong temptation exists to utilize these products to test Powered Devices. When coupled with long spools of cable or line loss simulators, a PSE may provide a “real world” interface to a PD. As an “interop” test strategy, this use of PSE’s suffers from the constantly growing number of PSE manufacturers, PSE device technologies, and product versions. The task of building confidence in a Power Device’s interoperability performance is therefore growing in complexity as the testing permutations multiply. The reality is that PSE’s are not test instruments. A PSE cannot test key characteristics of a PD that are ultimately vital to interoperability over all PoE networks. Even the most sophisticated PSE’s that offer some management reporting of PD classification and power draw offer no insight Test Coverage or Feature Commercial PSE PDA-300 regarding how the PSE produces those parameters PD Power-Up Covered Covered or what they might really mean. Ethernet Data Connection Covered Covered ALT-A and ALT-B Power MDI and MDI-X Polarity Detection Resistance Detection Capacitance Classification Signature Inrush Limiting Type -2 Power Delay PD Turn-On Voltage PD Turn-Off Voltage Average Power Consumption Peak Power Draw Classification Validity Power over Voltage MPS Validity
Covered Covered Covered Covered Covered Covered Covered Covered Covered Covered Covered Covered Covered Covered
Limited Limited Limited Not Covered Limited Not Covered Not Covered Not Covered Not Covered Not Covered Not Covered Not Covered Not Covered Limited
The IEEE 802.3at specification offers wide discretionary ranges to PSE’s as they perform PD detection, PD classification, and PD power management operations. While limiting PSE costs, these wide discretionary ranges severely limit the value of a PSE in qualifying PD interoperability. Table 1 illustrates a variety of PD performance parameters that are critical to the broad interoperability of a PD and the respective test coverage that can be expected from a commercial PSE relative to a PDA-300.
Table 1: PDA-300 vs Commercial PSE Coverage
The Automated 802.3at PoE Test Suite Many features of a PD that are critical for interoperability with all 802.3at compliant PSE’s are readily assessed through a fully automated sequence of measurements by the PDA-300. The PDA-300 emulates both Type-1 and Type2 PSE’s and will support PD power loads beyond the maximum allowed 25.5 watts. The 802.3at PoE Test Suite can be accessed either from the PDA-300 front panel (standalone operation) or from PDA Interactive software where colorful Microsoft Excel spreadsheet reports are automatically produced. The suite is also accessible through the PDA-300 API library for Microsoft Windows. The 802.3at PoE Test Suite tests pre-power characteristics in four “quadrants”, that is independently on each powered pair with each power polarity (ALT-A, ALT-B, MDI, MDI-X). Powered PD parameters may be acquired either in a single quadrant or in all four quadrants to assure maximum fault coverage.
Category
Test Parameter
Description
Unpowered PD
R_detect C_detect I_class
Detection resistance (2.7 to 10.1 Volt band) Detection capacitance (2.7 to 10.1 Volt band) Classification signature current (15 – 20 Volt band) PD Class determined from classification PD Type determined from classification Voltage at which PD draws load current Voltage at which PD stops load current Capacitive charging energy (watt-sec) over worst 20msec sub-interval of Inrush interval – a failure indicates an Iinrush_pd violation while a pass indicates very low inrush interoperability risk Average PD power draw following the 50msec inrush interval Maximum PD transient load following the 50msec inrush interval Maximum transient load current sampled following the 50msec inrush interval* Minimum load current sampled after power-up. (Note: PD’s meeting DC MPS signature criteria described in IEEE 802.3at paragraph 33.3.8 will report 10mA or higher.) Average load current following the 50msec inrush interval Class pulse discharge current measured between class pulses Average PD power draw following the 50msec inrush interval Maximum PD transient load following the 50msec inrush interval Power load measured between end of inrush interval (50msec) and Tdelay (80msec) (see IEEE 802.3at paragraph 33.3.7.3) Maximum transient load current sampled following the 50msec inrush interval Minimum load current sampled after power-up. (Note: PD’s meeting DC MPS signature criteria described in IEEE 802.3at paragraph 33.3.8 will report 10mA or higher.) Average load current following the 50msec inrush interval
Class Type V_on V_off Inrush_E
Powered from Type-1 PSE
Pclass_pd_1 Ppeak_pd_1
Single-Event Classification and 48V DC Source
Max_Load_1 MPS_Load_1
Average_Load_1 Powered from Type-2 PSE
I_Mark Pclass_pd_2
Two-Event Classification and 54V DC Source
802.3at PoE Test Suite parameters and associated test criteria are shown in Table 2.
Ppeak_pd_2 P_type-1
Max_Load_2 MPS_Load_2
Average_Load_2
Table 2: 802.3at PoE Test Parameters
Copyright 2012 Sifos Technologies, Inc.
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PDA-300 Powered Device Analyzer
The 802.3at standard spreadsheet report operates in one of two ways: An automatic pop-up report at the end of each test cycle or a suppressed spreadsheet report that can accumulate up to 24 test cycles of test results while adding Min-Max-Average statistics for each parameter tested across N cycles. This second mode enables testing of multiple units or repeatability testing of a single unit. An example report including 5 cycles (e.g. 5 units) of results is shown in Figure 1. The standard 802.3at PoE Test spreadsheet report opens as a read-only file and may be saved to a directory path or file name selected by the PDA Interactive user.
Figure 1: Standard 802.3 Test Report, Single Quadrant
Load Monitoring with the PDA-300 Full compliance testing of a Powered Device (PD) often requires some form of intervention from a control entity in order to assess all states of power draw by the PD. PD’s vary widely in the variety of operating states and methods of control required to actuate those states. For this reason, the Automated 802.3at PoE Test Suite alone cannot fully assess specification conformance during powered-on states of a PD. The Load Monitor (or Load Meter) samples power loading behaviors of a PD over an arbitrarily long time period while allowing users the opportunity to manipulate states or other test conditions in the PD while the Load Monitor collects data. As a standalone instrument, the PDA-300 offers a basic load meter that samples PD power (in watts and mA) continuously at a rate of about three samples per second and displays those values to the LCD display. Within PDA Interactive software, a more sophisticated Load Monitor (see Figure 2) assesses Pclass_pd and Ppeak_pd behaviors and limit violations. The PDA Interactive Load Monitor utilizes 20msec real-time sampling to provide a live strip-chart view of either instantaneous power load (updated 50 times per second) or Pclass running average over a 1 second averaging window.
Figure 2: PDA Interactive Load Monitor
Ppeak_pd limit violations occur when Ppeak_pd exceeds Ppeak_max. Pclass_pd limit violations occur when Pclass_pd exceeds Pclass_max for longer than 50 msec. The PDA Interactive Load Monitor plots Ppeak_max and Pclass_max limit lines using either default values from PD physical classification or based upon user override values Copyright 2012 Sifos Technologies, Inc.
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PDA-300 Powered Device Analyzer
that might reflect a PD’s LLDP-embedded power request. Even very rare limit violations can be automatically captured and analyzed using the Stop on Violation feature of the Load Monitor. The PDA Interactive Load Monitor can help designers and QA personnel assess the validity of a PD’s classification level and/or LLDP power request level. Even very rare intermittent power transients can readily be trapped and analyzed to determine whether PD’s are either mis-classified or generating unexpected load levels. The PDA Interactive Load Monitor also records Energy Consumption over longer periods of time in order to report watt-hour rating of a PD. Long duration load tracing is facilitated by a Trace to Disk feature where real time loading behavior over periods of minutes or hours can be recorded continuously to a data file. The Load Monitor Trace Display (see Figure 2) can also be exported to a Microsoft Excel spreadsheet (see Figure 3).
Figure 3: Load Monitor Spreadsheet Report
PDA-300: Stand-Alone or Computer Hosted The PDA-300 operates either as a stand-alone instrument or under Microsoft Windows PC-based software control using PDA Interactive software. As a stand-alone instrument, users may configure and run 802.3at PoE Tests, run the basic Load Meter, and create simple User-Defined Tests (with modified test limits) to get parameter data and PASS/FAIL indications. PDA Interactive enhances each of these capabilities with the ability to route test data into informative spreadsheet reports and with the addition of the more sophisticated Load Monitor capabilities Figure 4: PDA-300 Soft-Key Test Menu described above. The PDA-300 implements a simple soft-key front panel control (see Figure 4) that is largely replicated as a virtual front panel in PDA Interactive (see Figure 5). Most configuration and control operations are intuitive and are performed identically regardless of whether the instrument is used stand-alone or under PDA Interactive software. The PDA-300 may also be controlled from user-developed ATE software via the PDA-300 API for Microsoft Windows. Figure 5: PDA Interactive Virtual Soft-Key Test Menu
User-Defined Tests and Limits
Both the PDA-300 as a stand-alone instrument and PDA Interactive allow for specialized testing using user-defined test limits. This features enables users to create specific tests with narrower limit ranges, specified test quadrants, specified sampling durations, and certain measurement exclusions. Generally, such testing might be useful in a production setting where obtaining a PASS/FAIL indication relative to user-specified criteria is important.
What about PoE LLDP ? Under IEEE 802.3at, Type-2 (high power) PD’s are required to operate as Type-1 (normal power) PD’s until receiving a grant (or permission) from the PSE to operate with higher power load. All Type-2 PD’s must support both a 2-Event (classification) power grant and a PoE Link Layer Discovery Protocol (LLDP) grant since Type-2 PSE’s generally have discretion to use one or the other method. The PDA-300 performs comprehensive, multi-state electrical testing of the Powered Device, including full power states achieved following a 2-Event power grant. Load Monitoring can be used to establish or verify LLDP Power Request levels that a PD should utilize. Users wishing to verify LLDP protocol and state behaviors of a Powered Device may do so by routing the PDA-300 THRU port to an LLDP (PSE) emulation entity. The PDA-300 Load Monitor may then be used to assess PD power state changes and any potential violations of Pclass_max, Ppeak_max, and LLDP Power Request levels. The Sifos Technologies PDA-LLDP can perform highly flexible PSE LLDP emulation and protocol analysis. This instrument can be combined with the PDA-300 to assess LLDP behaviors of an 802.3at compliant PD. See Sifos datasheet PDA-LLDP Powered Device LLDP Analyzer for further information. Copyright 2012 Sifos Technologies, Inc.
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PDA-300 Powered Device Analyzer
Technical Data Input/Output Interface
TEST Port
Parameter Connections PoE Signaling and Supply Modes Data Rates and Signaling Impedance
THRU Port
Connections Data Rates and Signaling Latency Impedance
Serial Port
Connections Operating Baud Rate (RS-232) Instrument Control Display LED's
User Interface
Specification RJ45 ALT-A MDI, ALT-A MDI-X, ALT-B MDI, ALT-B MDI-X 10/100/1000BaseT 100Ω, Balanced RJ45 10/100/1000BaseT 0 ( Passively Coupled) 100Ω, Balanced DB-9, Straight (non-null modem) 9600 bps (configured by PDA Interactive) 4-Button Soft-Key Control White/Blue LCD screen DETecting: Performing Detection CLAssifying: Performing Classification 2 EVent Grant: 2-Event Class Prior to Power-Up PWR On: DC Power Applied to PD
Source Specifications Source
DC Supply
PD Detection Resistance PD Detection Capacitance PD Classification
Parameter Voltage Range - Continuous Voltage Accuracy Voltage Resolution Maximum Source Current Method Probing Voltage Method Probing Voltage Modes Classification Probing Voltage & Time Mark Region Voltage & Time
Specification Continuous: 36 VDC to 57 VDC Timed <120 Sec.: 28 – 35 VDC + 1.5% 1 Volt Continuous: 600 mA 50msec Transient: 630mA ∆V / ∆I ~4.5V - ~9V Slew Time ~4.5V - ~9V One-Event and Two-Event ~17.5V, ~15.5msec ~8.5V, >6msec
Measurement Specifications Measurement PD Detection Resistance
Parameter Range
Specification 2kΩ to 50kΩ + 1% (19kΩ to 26.5kΩ) + 3% (15kΩ to 33kΩ) + 15% (Full Range)
Accuracy
Internal 802.3at Test Limits PD Detection Capacitance
Range Accuracy Internal 802.3at Test Limits
PD Classification
Classification Range Classification Accuracy Mark Region Range (Mark 2 Event Only) Mark Region Accuracy Internal 802.3at Test Limits
Power Level (General)
Range Resolution Accuracy Sample Timing & Integration
Copyright 2012 Sifos Technologies, Inc.
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23.7kΩ to 26.3kΩ 1nF-50µF + 3% + 3nF 0.05µF- 0.12µF 0mA to 60mA +/-2% + 600µΑ 0.1 to 4.1 mA + 2% + 100µΑ Class 0 PD: 0 to 4 mA Class 1 PD: 9 to 12 mA Class 2 PD: 17 to 20 mA Class 3 PD: 26 to 30 mA Class 4 PD: 36 to 44 mA Mark Region: 0.1 to 4.1 mA 0 to 30 Watts 0.1 W + 2% + 0.1W ~18 msec (> 55 samples / sec)
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PDA-300 Powered Device Analyzer Measurement PD Class Power (Pclass)
Parameter Measurement Integration Time
Internal 802.3at Test & PSA Interactive Load Monitor Limits (Upper Limit= Pclass_max) Peak Power Level (Ppeak)
Measurement Integration Time Internal 802.3at Test & PSA Interactive Load Monitor Limits (Upper Limit= Ppeak_max)
P_Type-1 Power Inrush_E Load Current (General)
Load Current (802.3at Test)
Measurement Time Interval Internal Test Limits (All Classes) Measurement Time Interval 802.3at Test Limits (Highest Sample) Range Resolution Accuracy Sample Timing & Integration Integration Time
Internal 802.3at Test Limits (mA)
Turn-On Voltage
Turn-Off Voltage
Range Resolution Accuracy Internal Test Limits Range Resolution Accuracy Internal Test Limits
Specification 802.3at Test: ~5 Seconds Load Monitor: 1 sample or 1 second Load Monitor Violation Test: ~54 msec Class 0, 3 PD: 0 to 13.0 Watts Class 1 PD: 0 to 3.84 Watts Class 2 PD: 0 to 6.49 Watts Class 4 PD: 0 to 25.5 Watts After Tdelay 1 sample (~18 msec) Load Monitor Violation Test: 1 sample Class 0,3 PD: 0 to 14.4 Watts Class 1 PD: 0 to 5.00 Watts Class 2 PD: 0 to 8.36 Watts Class 4 PD: 0 to 28.3 Watts After Tdelay ~54 to ~72 msec after power-up Ppeak (Class 4 restricted 14.4W) ~0 to ~72 msec after power-up 0 to 0.38 Watt-Sec 0 to 630 mA 0.1 mA + 1% + 600µΑ ~18 msec (> 55 samples / sec) Max Load: 1 sample MPS Load: 1 sample Average Load: > 1 second Max Load: 10 – Ppeak_max / Vport MPS Load: 10 – Pclass_max / Vport Average Load: 2.3 – Pclass_max/ Vport 28 to 48 V 0.1 V * < 42 VDC 28 to 48 V 0.1 V * > 30 VDC
* Voltage Turn-On and Turn-Off results are based on observed changes in PD current. Physical and Environment Characteristic WxHxL Weight Power Operating Temp. Storage Temp. Humidity
Specification 7.5" x 3" x 10" 3.2 Lbs. 100-240VAC, 50-60Hz, 700mA Max. 0°C to 40°C -20°C to 85°C 5% to 95% RH, Non-Condensing
Certifications Description
Certifications FCC Part 15, Class A Meets EN55011, VCCI, AS/NZS 3548 CSA Listed (CSA22.2 No. 61010) Meets EN61010-1 Low Voltage Directive (73/23/EEC) CE Marking Directive (93/68/EEC)Electromagnetic Compatibility Directive (89/336/EEC)
Emissions Safety European Commission FCC Statement:
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at their own expense.
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PDA-300 Powered Device Analyzer
Test Configurations
LLDP Protocol Test
Sifos PDA-LLDP
Ordering Information PDA-300 PDA-300U PDA-300-Cal
Powered Device Analyzer PDA-100 to PDA-300 Upgrade Calibration Service for PDA-300
Accessories Included:
PDA-300 Reference Manual PDA Interactive Software (CD) Power Cord Ethernet Patch Cable RS-232 Cable
Sifos Technologies, Inc. 1061 East Street Tewksbury, MA 01876 +1 (978) 640-4900 www.sifos.com
[email protected]
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